Question

我已经编写了一些代码来查找3个变量中的最低值然后显示它但是我得到“'如果'运算符需要两个或三个操作数。”我不确定这个问题是什么，我们将不胜感激。

<%      

            dim HP_RegularPayment As Integer = HP_RegularPayment
            dim LPC_RegularPayment As Integer = LPC_RegularPayment
            dim PCP_RegularPayment As Integer = PCP_RegularPayment

            if HP_RegularPayment < LPC_RegularPayment and if HP_RegularPayment < PCP_RegularPayment then
                %>
                <div id="detailsprice" style="height:70px; padding-top:5px;"> 
                £<% if DiscountPrice.Text = "" then
                    Response.Write(DiscountPrice.Text) 
                else 
                    Response.Write(Price.Text)
                end if 
                %><br /> <span style="font-size:12px;">Or £<%Response.Write(HP_RegularPayment) %> Per Month With HP Finance</span> </div> <%

            else if LPC_RegularPayment < HP_RegularPayment and if LPC_RegularPayment < PCP_RegularPayment then
                %>
                <div id="detailsprice" style="height:70px; padding-top:5px;"> 
                £<% if DiscountPrice.Text = "" then
                    Response.Write(DiscountPrice.Text) 
                else 
                    Response.Write(Price.Text)
                end if 
                %><br /> <span style="font-size:12px;">Or £<%Response.Write(LPC_RegularPayment) %> 
                Per Month With LP Finance</span> </div> <%

            else if PCP_RegularPayment < HP_RegularPayment and if PCP_RegularPayment < LPC_RegularPayment then
                %>
                <div id="detailsprice" style="height:70px; padding-top:5px;"> 
                £<% if DiscountPrice.Text = "" then
                    Response.Write(DiscountPrice.Text) 
                else 
                    Response.Write(Price.Text)
                end if 
                %><br /> <span style="font-size:12px;">Or £<%Response.Write(PCP_RegularPayment) %> Per Month With PCP Finance</span> </div> <%
            else%>

            <div id="detailsprice"> 
                £<% if DiscountPrice.Text = "" then
                    Response.Write(DiscountPrice.Text) 
                else 
                    Response.Write(Price.Text)
                end if 

            end if%>

谢谢刘易斯

Answer 1

这是因为您在现有的if声明中都有另一个if ...

if HP_RegularPayment < LPC_RegularPayment and **if** HP_RegularPayment < PCP_RegularPayment then

名为If的{p> VB.NET has an operator需要两个或三个参数，如果第一个参数为Nothing，则返回第二个参数。

删除它，这就行......

if HP_RegularPayment < LPC_RegularPayment and HP_RegularPayment < PCP_RegularPayment then

我也同意@IrishChieftain的评论，你应该把你的代码和标记分开。

Answer 2

而不是

if HP_RegularPayment < LPC_RegularPayment and if HP_RegularPayment < PCP_RegularPayment then

使用

if HP_RegularPayment < LPC_RegularPayment and HP_RegularPayment < PCP_RegularPayment then

asp.net'If'运算符需要两个或三个操作数

2 个答案: